| 摘要 |
Solidborne noise and vibration is decoupled in a rotary wing aircraft by a laminated ball joint ( 15 ) for a suspension bar ( 13 ) of a transmission gearbox, the ball joint including at least two damper layers ( 19 ) dedicated to a frequency band for decoupling in the range 0 to 7000 Hz. For this purpose, the damper layers ( 19 ) and possibly also likewise dedicated interleaved layers ( 20 ) are given shape and/or dimension and/or physical-property parameters as a function of the frequency for decoupling in the determined frequency band.
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